package com.ruoyi.framework.web.service;

import com.alibaba.druid.support.json.JSONUtils;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.domain.entity.Webuser;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.core.domain.model.WxLoginBody;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.exception.user.*;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.ip.IpUtils;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.framework.security.context.AuthenticationContextHolder;
import com.ruoyi.framework.utils.StringUtil;
import com.ruoyi.framework.weixin.WeixinApi;
import com.ruoyi.system.domain.BUser;
import com.ruoyi.system.service.BUserService;
import com.ruoyi.system.service.ISysConfigService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;

@Component
@Slf4j
public class WebLoginService {
    @Autowired
    private TokenService tokenService;

    @Autowired
    ISysConfigService sysConfigService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private ISysConfigService configService;

    @Autowired
    private WeixinApi weixinApi;

    @Autowired
    private BUserService userService;

    /**
     * 登录验证
     *
     * @param username 用户名(手机号)
     * @param password 密码
     * @param code 验证码
     * @param uuid 唯一标识
     * @return 结果
     */
    public String login(String username, String password, String code, String uuid)
    {
        // 验证码校验
        validateCaptcha(username, code, uuid);
        // 登录前置校验
        loginPreCheck(username, password);
        // 用户验证
        Authentication authentication = null;
        try
        {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, password);
            AuthenticationContextHolder.setContext(authenticationToken);
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager.authenticate(authenticationToken);
        }
        catch (Exception e)
        {
            if (e instanceof BadCredentialsException)
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            }
            else
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        }
        finally
        {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        // 生成token
        return tokenService.createToken(loginUser);
    }

    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code 验证码
     * @param uuid 唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid)
    {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled)
        {
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
            String captcha = redisCache.getCacheObject(verifyKey);
            redisCache.deleteObject(verifyKey);
            if (captcha == null)
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            if (!code.equalsIgnoreCase(captcha))
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * 登录前置校验
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password)
    {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserConstants.PASSWORD_MIN_LENGTH
                || password.length() > UserConstants.PASSWORD_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // 用户名不在指定范围内 错误
        if (username.length() < UserConstants.USERNAME_MIN_LENGTH
                || username.length() > UserConstants.USERNAME_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr()))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }


    /**
     * 获取手机号
     * @param code
     * @return
     */
    public String getMobile(String code){
        Map params = new HashMap();
        params.put("code", code);

        String url = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=";
        Map result = weixinApi.postWechatAPI(url, JSONUtils.toJSONString(params));

        String errCode = StringUtil.getTrim(result.get("errcode"));
        if(!errCode.equals("0")){
            throw new ServiceException(result.get("errmsg").toString());
        }
        Map phoneInfo = (Map) result.get("phone_info");
        String phone = null;
        if (phoneInfo != null) {
            phone = StringUtil.getTrim(phoneInfo.get("phoneNumber"));
        }
        return phone;
    }

    /**
     * 微信授权登录
     *
     * @param loginBody
     * @return 结果
     */
    public String wxLogin(WxLoginBody loginBody){
        String mobile = loginBody.getMobile();
        String openId = loginBody.getOpenId();
        BUser bUser = userService.selectUserByOpenId(openId);
        if(ObjectUtils.isEmpty(bUser)){
            bUser = userService.selectUserByMobile(mobile);
        }
        if(ObjectUtils.isEmpty(bUser)){//用户不存在
            bUser = new BUser();
            bUser.setMobile(mobile);
            bUser.setOpenid(openId);
            bUser.setPassword(SecurityUtils.encryptPassword(sysConfigService.selectConfigByKey("sys.user.initPassword")));
            userService.save(bUser);
            log.info("userId={}",bUser.getId());
        }else{
            //绑定微信openid
            bUser.setOpenid(openId);
            userService.updateById(bUser);
        }
        Webuser webUser = new Webuser();
        BeanUtils.copyProperties(bUser,webUser);
        LoginUser loginUser =  new LoginUser(1, bUser.getId(), webUser, new HashSet<>());
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(mobile, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        // 生成token
        return tokenService.createToken(loginUser);
    }


}
